If she knows his thoughts, it doesn't show. If its crossed her mind that there may not be a 'next time' for the dancing, that she may not see the green and the spring outside, it doesn't show.

She's already adding to her treasure of memories of this place. Remember.

This step here, this turn of the music here, Yrael catching her hand and spinning her here. His voice providing the music and the flash of his smile. And because this is a happy memory, Svava smiles back.